Home / 73,106,989.20-109,660,483.80-72,603,104.40

Finding the Fourth Proportional to 73,106,989.20, 109,660,483.80 and 72,603,104.40

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Solution

The fourth proportional to 73,106,989.20, 109,660,483.80 and 72,603,104.40 is: 108,904,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,106,989.20 : 109,660,483.80 = 72,603,104.40 : x
  2. Step 2: Convert to fraction form
    73,106,989.20/109,660,483.80 = 72,603,104.40/x
  3. Step 3: Cross multiply
    73,106,989.20x = 109,660,483.80 × 72,603,104.40
  4. Step 4: Simplify right side
    73,106,989.20x = 7,961,691,553,885,909
  5. Step 5: Solve for x
    x = 7,961,691,553,885,909/73,106,989.20
  6. Step 6: Final answer
    x = 108,904,656.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.